Colchicine from Canada
Colchicine contains a tropolone ring system (modified aromatic heterocycle) used for gout treatment and as an anti-inflammatory drug. It falls under HTS 2934.99.30.00 as a chemically defined aromatic heterocyclic pharmaceutical drug.
Duty Rate — Canada → United States
16.5%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Include Certificates of Analysis showing total alkaloid content and absence of related substances
• Provide REMS program documentation if importing for US distribution due to safety restrictions
• Declare exact moisture content as it affects stability during storage and transport